Tim Hortons Old Fashion Snow
This old fashion donut is high, led by defatted soy flour plus the enriched flour and oil.
Fast food is cooked in batches and held warm rather than made when you order it, so it is rarely as fresh as something cooked at home. That matters here because histamine builds up as protein foods sit, which means the same item can affect you differently depending on how long it waited.
The Old Fashion Snow is a cake-style donut made from enriched flour, shortening, sugar, soy flour, milk powder, and egg yolks, and the soy flour is what pushes it high.
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Defatted soy flour leads — it lands high on its own, which sets the whole donut's rating regardless of the milder parts.
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The base backs it up — enriched flour and soybean oil are both moderate, so the dough itself is not low either.
Because the driver is baked into the batter, there is no ordering tweak that brings this one down.
This rating comes from Tim Hortons' own published ingredient statement, read on August 23, 2026. Restaurant recipes vary by location and change over time, so always check the current listing: source 1, source 2. How we rate foods →
Tim Hortons Old Fashion Snow and Tim Hortons are trademarks of their respective owners. This page is an independent histamine reference and is not affiliated with, endorsed by, or sponsored by the brand.
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For educational purposes only. Not medical advice. Consult a healthcare professional for personal guidance.
References
- SIGHI Food Compatibility List — SIGHI (2026)
- Histamine and histamine intolerance — Maintz & Novak (2007)
- Histamine Intolerance: The Current State of the Art — Comas-Basté et al. (2020)
- Low-Histamine Diets: Is the Exclusion of Foods Justified by Their Histamine Content? — Sánchez-Pérez et al. (2021)
- Histamine Intolerance: Symptoms, Diagnosis, and Beyond — Jochum (2024)
- Guideline on management of suspected adverse reactions to ingested histamine — Reese et al. (2021)